There are many surviving statues of both Greek and Roman art.Statues of real people too,not just heroes and gods.They are very similar and very different compared to subsaharan Africans.Many Italians visit Greece,I have met many Italians,we and them are very similar looking today also. Any invasions Greece and the Italian peninsula dealt with,were not enough to significantly alter our genome.

PS.To the idiots saying that the Greek DNA was altered by the Ottoman Turks : It was the opposite. Greeks and Turks did not officially mingle,because they belong to different religions,Christianity and Islam.Marrying with a person of a different faith,meant that one of you would abandon their religion and converting to the religion of their spouse. People were pretty fanatic about their faith then.Turks though had the power and will to kidnap young women to place in their harems and young boys to convert and use as soldiers and bureaucrats.(Google "Devshirme"). The original Turks were very Mongolian looking,but most of Turks today look European and Anatolian (who looked very similar to Mediterranean Europeans ).